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SuperMontage, abbreviated simply as SM, is an integrated trading system used in American stock exchange Nasdaq that was implemented in 2002. It features a fully integrated public limit order book and market maker quotations, the ability to enter multiple quotes, anonymous ordering, five-level-deep buy and sell interest, and time-stamps on individual orders.[1]
The SM system generally works behind the scenes, but on rare occasions it can be seen at work when a test symbol such as "ZVZZT" runs across the ticker.[2]
NASDAQ strongly encourages firms to utilize test securities for testing their production systems.
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